system/docker-buildx: Added (BuildKit plugin)

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

system/docker-buildx/README

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+buildx is a Docker CLI plugin for extended build capabilities with
+BuildKit.

system/docker-buildx/docker-buildx.SlackBuild

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+#!/bin/bash
+
+# Slackware build script for docker-buildx
+
+# Copyright 2022 Andrew Clemons, Tokyo Japan
+# All rights reserved.
+#
+# Redistribution and use of this script, with or without modification, is
+# permitted provided that the following conditions are met:
+#
+# 1. Redistributions of this script must retain the above copyright
+#    notice, this list of conditions and the following disclaimer.
+#
+#  THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR IMPLIED
+#  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+#  MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO
+#  EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+#  PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+#  OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+#  WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+#  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+#  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+cd $(dirname $0) ; CWD=$(pwd)
+
+PRGNAM=docker-buildx
+VERSION=${VERSION:-0.9.1}
+GITHASH=${GITHASH:-ed00243a0ce2a0aee75311b06e32d33b44729689}
+BUILD=${BUILD:-1}
+TAG=${TAG:-_SBo}
+PKGTYPE=${PKGTYPE:-tgz}
+
+SRCNAM=buildx
+
+if [ -z "$ARCH" ]; then
+  case "$( uname -m )" in
+    i?86) ARCH=i586 ;;
+    arm*) ARCH=arm ;;
+       *) ARCH=$( uname -m ) ;;
+  esac
+fi
+
+if [ ! -z "${PRINT_PACKAGE_NAME}" ]; then
+  echo "$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE"
+  exit 0
+fi
+
+TMP=${TMP:-/tmp/SBo}
+PKG=$TMP/package-$PRGNAM
+OUTPUT=${OUTPUT:-/tmp}
+
+set -e
+
+rm -rf $PKG
+mkdir -p $TMP $PKG $OUTPUT
+cd $TMP
+rm -rf $SRCNAM-$VERSION
+tar xvf $CWD/$SRCNAM-$VERSION.tar.gz
+cd $SRCNAM-$VERSION
+chown -R root:root .
+find -L . \
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
+
+GITURI=github.com/docker/buildx
+
+CGO_ENABLED=0 \
+GOFLAGS=-mod=vendor \
+GO111MODULE=on \
+  go build -ldflags "-X $GITURI/version.Version=${VERSION} -X $GITURI/version.Revision=${GITHASH} -X $GITURI/version.Package=$GITURI -w -s" \
+  -o docker-buildx ./cmd/buildx
+
+mkdir -p $PKG/usr/libexec/docker/cli-plugins/
+install -Dm755 docker-buildx $PKG/usr/libexec/docker/cli-plugins/
+
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
+  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
+
+mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
+cp -a \
+  AUTHORS LICENSE MAINTAINERS README.md \
+  $PKG/usr/doc/$PRGNAM-$VERSION
+cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
+
+mkdir -p $PKG/install
+cat $CWD/slack-desc > $PKG/install/slack-desc
+
+cd $PKG
+/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.$PKGTYPE

system/docker-buildx/docker-buildx.info

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+PRGNAM="docker-buildx"
+VERSION="0.9.1"
+HOMEPAGE="https://github.com/docker/buildx"
+DOWNLOAD="UNSUPPORTED"
+MD5SUM=""
+DOWNLOAD_x86_64="https://github.com/docker/buildx/archive/v0.9.1/buildx-0.9.1.tar.gz"
+MD5SUM_x86_64="5754280361eb17f5e5eb78feca53f47b"
+REQUIRES="google-go-lang"
+MAINTAINER="Andrew Clemons"
+EMAIL="andrew.clemons@gmail.com"

system/docker-buildx/slack-desc

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+# HOW TO EDIT THIS FILE:
+# The "handy ruler" below makes it easier to edit a package description.
+# Line up the first '|' above the ':' following the base package name, and
+# the '|' on the right side marks the last column you can put a character in.
+# You must make exactly 11 lines for the formatting to be correct.  It's also
+# customary to leave one space after the ':' except on otherwise blank lines.
+
+             |-----handy-ruler------------------------------------------------------|
+docker-buildx: docker-buildx (plugin for extended build capabilities with BuildKit)
+docker-buildx:
+docker-buildx: buildx is a Docker CLI plugin for extended build capabilities with
+docker-buildx: BuildKit.
+docker-buildx:
+docker-buildx: Homepage: https://github.com/docker/buildx
+docker-buildx:
+docker-buildx:
+docker-buildx:
+docker-buildx:
+docker-buildx: